**Steps to replicate the issue** (include links if applicable):
* Affecting for example: https://en.wikipedia.org/api/rest_v1/page/mobile-html/Stellar_nucleosynthesis
* Similar to usability impact of the now-fixed ~~[[ https://phabricator.wikimedia.org/T312667 | T312667 ]]~~ and ~~[[ https://phabricator.wikimedia.org/T313498 | T313498 ]]~~
**What happens?**:
Empty horizontal space caused by math elements resulting in scrolling difficulty
**What should have happened instead?**:
I think, math elements should be rendered in their own horizontally scrollable area (see example attached below)
**Software version** (skip for WMF-hosted wikis like Wikipedia):
6.9.3
**Other information** (browser name/version, screenshots, etc.):
{F35585488}
Above shows problem
{F35585489}
Above shows possible solution(?)